The most common and most likely answer to this crossword clue is the 9 letter word SKYROCKET
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More clues leading to the result SKYROCKET
- Variety of blue, edible leaves shoot up
- Blue plant displaying shoot high up
- Shoot up ice in island retreat, at last
- Shoot up filming locale around Kentucky boulder
- Outlet stocking 1,000-year firework
- Shock permeates island — without cuts taxes shoot up
- Where in Whitechapel you’ll find 5 go through the roof?
Buddy explains!

The straight part
We know that "firework" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case firework = skyrocket.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SKYROCKET mean?
SKYROCKET noun- A type of firework that uses a solid rocket engine to rise quickly into the sky where it emits a variety of effects such as stars, bangs, crackles, etc.
- (by extension) A rebuke, a scolding.
- Pocket.
- To increase suddenly and extremely; to shoot up; to surge or spike.